cucm media resources allocation error

With this limited traces it would be difficult to be 100% accurate on what is causing this issue. Will need more details about the call flow and addtional logs. Though from the above, it seems to be that CallManager is trying to allocate a transcoder and the same is failing due to capabilities mismatch. This is a codec mismatch issue where you need a transcoder to be inserted and the same fails as there is none available.

cucm media resources allocation error

Yes, i've checked. It doesn't depend (IMO) of any specific Device Pool or MRGL.I changed both of them. Trace stay the same. Moreover, there are few MTPs and transcoder, which aren't assigned to any MRG. Thay have to be available to all.

cucm media resources allocation error

From the trace we can see that the MTP device selected is =C2821-SIP-A12. W can also see that the region between the end points and this device is set to use 64Kbps..The question is what is the codec configured for this MTP? Can you send a sh run of your gateway?

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cucm media resources allocation error

From trace we can see announced list of codecs, but it's not clear: C2821-SIP-A12 is a side A or side B. And what is the difference between MTP/XCoder Device Caps and Device Caps. I mean, which one belong to selected device and whom belong the other one. Also there is a two pairs of MTP/XCoder Device Caps and Device Caps...

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